XmlDocument reading XML Document comment Issue

Question

I am using XmlDocument to parse xml file, but it seems that XmlDocument is always reading xml comments as a xml nodes:

My C# code

XmlDocument xml = new XmlDocument();
xml.Load(filename);

foreach (XmlNode node in xml.FirstChild.ChildNodes) {

}

Xml file

<project>
    <!-- comments-->
    <application name="app1">
        <property name="ip" value="10.18.98.100"/>
    </application>
</project>

Shouldn't .NET skip XML comments?

a small point: XmlDocument has nothing to do with C#. It's part of .NET, not part of C#. — John Saunders, Jun 24 '11 at 15:09

Christoph Fink · Accepted Answer · 2011-06-24T14:30:33.960

No, but node.NodeType schould by XmlNodeType.Comment.
If it wouldn't read the comments you also couldn't access them, but you can do something like the following to get all "real nodes":

XDocument xml = XDocument.Load(filename);
var realNodes = from n in xml.Descendants("application")
                where n.NodeType != XmlNodeType.Comment
                select n;

foreach(XNode node in realNodes)
{ 
    //your code
}

or without LINQ/XDocument:

XmlDocument xml = new XmlDocument();
xml.Load(filename);

foreach (XmlNode node in xml.FirstChild.ChildNodes)
{
     if(node.NodeType != XmlNodeType.Comment)
     {
         //your code
     }
}

It looks to me it should be " where n.NodeType != XmlNodeType.Comment " ? — icn, Jun 24 '11 at 14:20

score 1 · Answer 2 · answered Jun 24 '11 at 14:14

1

Look at XmlNodeType.Comment

answered Jun 24 '11 at 14:14

Kirill Polishchuk

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score 1 · Answer 3 · answered Jun 24 '11 at 14:20

Try this

        XmlDocument xml = new XmlDocument();
        xml.Load(filename);

        foreach (XmlNode node in xml.FirstChild.ChildNodes) 
        {
            if(node.GetType() == XmlNodeType.Comment)
            {
               //Do nothing
            }
            else
            {
               //Your code goes here.
            }
       }

XmlDocument reading XML Document comment Issue

3 Answers3